cmd_usage(): simplify return code handling

Lots of code use this construct:

	cmd_usage(cmdtp);
	return 1;

Change cmd_usage() let it return 1 - then we can replace all these
ocurrances by

	return cmd_usage(cmdtp);

This fixes a few places with incorrect return code handling, too.

Signed-off-by: Wolfgang Denk <wd@denx.de>

7 files changed, 32 insertions, 51 deletions

diff --git a/board/amcc/acadia/cmd_acadia.c b/board/amcc/acadia/cmd_acadia.c
index 86f86e2..6936e51 100644
--- a/board/amcc/acadia/cmd_acadia.c
+++ b/board/amcc/acadia/cmd_acadia.c
@@ -44,10 +44,8 @@ static int do_bootstrap(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[
 	u8 *buf;
 	int cpu_freq;
 
-	if (argc < 3) {
-		cmd_usage(cmdtp);
-		return 1;
-	}
+	if (argc < 3)
+		return cmd_usage(cmdtp);
 
 	cpu_freq = simple_strtol(argv[1], NULL, 10);
 	if (cpu_freq != 267) {
diff --git a/board/amcc/luan/luan.c b/board/amcc/luan/luan.c
index c0368c0..c09d730 100644
--- a/board/amcc/luan/luan.c
+++ b/board/amcc/luan/luan.c
@@ -223,8 +223,7 @@ int do_l2cache( cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[] )
 			l2cache_status() ? "ON" : "OFF");
 		return 0;
 	default:
-		cmd_usage(cmdtp);
-		return 1;
+		return cmd_usage(cmdtp);
 	}
 
 	return  0;
diff --git a/board/amcc/makalu/cmd_pll.c b/board/amcc/makalu/cmd_pll.c
index 3c0dc5f..7f75ad7 100644
--- a/board/amcc/makalu/cmd_pll.c
+++ b/board/amcc/makalu/cmd_pll.c
@@ -182,14 +182,14 @@ do_pll_alter (cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
 {
 	char c = '\0';
 	pll_freq_t pll_freq;
-	if (argc < 2) {
-		cmd_usage(cmdtp);
-		goto ret;
-	}
 
-	for (pll_freq = PLL_ebc20; pll_freq < PLL_TOTAL; pll_freq++)
+	if (argc < 2)
+		return cmd_usage(cmdtp);
+
+	for (pll_freq = PLL_ebc20; pll_freq < PLL_TOTAL; pll_freq++) {
 		if (!strcmp(pll_name[pll_freq], argv[1]))
 			break;
+	}
 
 	switch (pll_freq) {
 	case PLL_ebc20:
@@ -223,8 +223,7 @@ do_pll_alter (cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
 
 	default:
 		printf("Invalid options\n\n");
-		cmd_usage(cmdtp);
-		goto ret;
+		return cmd_usage(cmdtp);
 	}
 
 	printf("PLL set to %s, "
diff --git a/board/amcc/taihu/lcd.c b/board/amcc/taihu/lcd.c
index 595dee3..9b2afda 100644
--- a/board/amcc/taihu/lcd.c
+++ b/board/amcc/taihu/lcd.c
@@ -139,10 +139,9 @@ static int do_lcd_clear (cmd_tbl_t * cmdtp, int flag, int argc, char * const arg
 
 static int do_lcd_puts (cmd_tbl_t * cmdtp, int flag, int argc, char * const argv[])
 {
-	if (argc < 2) {
-		cmd_usage(cmdtp);
-		return 1;
-	}
+	if (argc < 2)
+		return cmd_usage(cmdtp);
+
 	lcd_puts(argv[1]);
 
 	return 0;
@@ -150,10 +149,9 @@ static int do_lcd_puts (cmd_tbl_t * cmdtp, int flag, int argc, char * const argv
 
 static int do_lcd_putc (cmd_tbl_t * cmdtp, int flag, int argc, char * const argv[])
 {
-	if (argc < 2) {
-		cmd_usage(cmdtp);
-		return 1;
-	}
+	if (argc < 2)
+		return cmd_usage(cmdtp);
+
 	lcd_putc((char)argv[1][0]);
 
 	return 0;
@@ -165,10 +163,8 @@ static int do_lcd_cur (cmd_tbl_t * cmdtp, int flag, int argc, char * const argv[
 	ulong dir;
 	char cur_addr;
 
-	if (argc < 3) {
-		cmd_usage(cmdtp);
-		return 1;
-	}
+	if (argc < 3)
+		return cmd_usage(cmdtp);
 
 	count = simple_strtoul(argv[1], NULL, 16);
 	if (count > 31) {
diff --git a/board/amcc/taihu/taihu.c b/board/amcc/taihu/taihu.c
index 1682cf7..dd2aba5 100644
--- a/board/amcc/taihu/taihu.c
+++ b/board/amcc/taihu/taihu.c
@@ -101,16 +101,12 @@ static int do_led_ctl(cmd_tbl_t* cmd_tp, int flags, int argc, char * const argv[
 {
 	int led_no;
 
-	if (argc != 3) {
-		cmd_usage(cmd_tp);
-		return -1;
-	}
+	if (argc != 3)
+		return cmd_usage(cmd_tp);
 
 	led_no = simple_strtoul(argv[1], NULL, 16);
-	if (led_no != 1 && led_no != 2) {
-		cmd_usage(cmd_tp);
-		return -1;
-	}
+	if (led_no != 1 && led_no != 2)
+		return cmd_usage(cmd_tp);
 
 	if (strcmp(argv[2],"off") == 0x0) {
 		if (led_no == 1)
@@ -123,8 +119,7 @@ static int do_led_ctl(cmd_tbl_t* cmd_tp, int flags, int argc, char * const argv[
 		else
 			gpio_write_bit(31, 0);
 	} else {
-		cmd_usage(cmd_tp);
-		return -1;
+		return cmd_usage(cmd_tp);
 	}
 
 	return 0;
diff --git a/board/amcc/taishan/lcd.c b/board/amcc/taishan/lcd.c
index 6a049df..7f7730a 100644
--- a/board/amcc/taishan/lcd.c
+++ b/board/amcc/taishan/lcd.c
@@ -166,19 +166,17 @@ static int do_lcd_clear(cmd_tbl_t * cmdtp, int flag, int argc, char * const argv
 }
 static int do_lcd_puts(cmd_tbl_t * cmdtp, int flag, int argc, char * const argv[])
 {
-	if (argc < 2) {
-		cmd_usage(cmdtp);
-		return 1;
-	}
+	if (argc < 2)
+		return cmd_usage(cmdtp);
+
 	lcd_puts(argv[1]);
 	return 0;
 }
 static int do_lcd_putc(cmd_tbl_t * cmdtp, int flag, int argc, char * const argv[])
 {
-	if (argc < 2) {
-		cmd_usage(cmdtp);
-		return 1;
-	}
+	if (argc < 2)
+		return cmd_usage(cmdtp);
+
 	lcd_putc((char)argv[1][0]);
 	return 0;
 }
@@ -188,10 +186,8 @@ static int do_lcd_cur(cmd_tbl_t * cmdtp, int flag, int argc, char * const argv[]
 	ulong dir;
 	char cur_addr;
 
-	if (argc < 3) {
-		cmd_usage(cmdtp);
-		return 1;
-	}
+	if (argc < 3)
+		return cmd_usage(cmdtp);
 
 	count = simple_strtoul(argv[1], NULL, 16);
 	if (count > 31) {
diff --git a/board/amcc/yucca/cmd_yucca.c b/board/amcc/yucca/cmd_yucca.c
index cde13e4..e9cd333 100644
--- a/board/amcc/yucca/cmd_yucca.c
+++ b/board/amcc/yucca/cmd_yucca.c
@@ -58,10 +58,8 @@ static int setBootStrapClock(cmd_tbl_t *cmdtp, int incrflag, int flag,
 	char plbClock[4];
 	char pcixClock[4];
 
-	if (argc < 3) {
-		cmd_usage(cmdtp);
-		return 1;
-	}
+	if (argc < 3)
+		return cmd_usage(cmdtp);
 
 	if (strcmp(argv[2], "prom0") == 0)
 		chip = IIC0_BOOTPROM_ADDR;